I remember back in the late 90s at one of (GNU/)Linux shows (was it in Paris?) RMS arrived and started singing this song, many people joined in marching, it was a very happy and positive event. Of course everybode knew it's a kind of joke, just like the whole St. iGNUcius thing, but at the same time the general idea of sharing the code with others as opposed to hiding it seemed quite serious and meaningful. And so it continues to this day.